2005 Audi A8 vs. 1999 Audi A4
To start off, 2005 Audi A8 is newer by 6 year(s). Which means there will be less support and parts availability for 1999 Audi A4. In addition, the cost of maintenance, including insurance, on 1999 Audi A4 would be higher. At 5,998 cc, 2005 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi A8 (444 HP @ 6500 RPM) has 197 more horse power than 1999 Audi A4. (247 HP @ 4150 RPM). In normal driving conditions, 2005 Audi A8 should accelerate faster than 1999 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 1999 Audi A4 weights approximately 435 kg more than 2005 Audi A8.
Because 2005 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 1999 Audi A4. In wet, icy, snow, or gravel driving conditions, 2005 Audi A8 will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2005 Audi A8 (560 Nm @ 4000 RPM) has 239 more torque (in Nm) than 1999 Audi A4. (321 Nm @ 1900 RPM). This means 2005 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi A4.
Compare all specifications:
| 2005 Audi A8 | 1999 Audi A4 | |
| Make | Audi | Audi |
| Model | A8 | A4 |
| Year Released | 2005 | 1999 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 5998 cc | 1896 cc |
| Engine Type | W | in-line |
| Horse Power | 444 HP | 247 HP |
| Engine RPM | 6500 RPM | 4150 RPM |
| Torque | 560 Nm | 321 Nm |
| Torque RPM | 4000 RPM | 1900 RPM |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 245 km/hour | 190 km/hour |
| Acceleration 0-100mph | 5.2 seconds | 12.8 seconds |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 900 kg | 1335 kg |
| Vehicle Length | 5190 mm | 4480 mm |
| Vehicle Width | 1900 mm | 1740 mm |
| Vehicle Height | 1460 mm | 1420 mm |
| Wheelbase Size | 3080 mm | 2630 mm |
| Fuel Tank Capacity | 90 L | 62 L |
